i am wondering how much a site is worth for example site that make $40 to $60 also how do we relate Google adsense with the traffic and finally the PR
No one could give you an estimate with a too rough data like this. You should give more info or based on the fact instead of too plain example. There are many factors involved when peoples do considering about buying one site. 1. How the site main income sources? (PPC / Affiliate / CPM / etc.) 2. How the site main traffics come from? (PPC / SEO / Banner / etc.) 3. Alexa Ranking 4. Consistency of traffics (compare from present backwards to 3/6/9/12 months ago or more) 5. Uniqueness of overall site contents. 6. Domain past history (ever got banned? penalized? etc.) 7. Link Popularity 8. Domain Age Not every factors would be referred, depends on each buyer expectation.
I agree with Sxperm; there are lots of thing to consider and evaluate before you can estimate the value of a website. This article might help you: http://www.ghacks.net/2007/04/01/how-to-determine-the-value-of-a-website/ http://www.powerhomebiz.com/vol151/selling.htm http://slickaffiliate.com/determine-your-websites-value-with-dnscoop/